Bani was born in 1979 in Mogadishu, the capital of Somalia, to an Italian father and a Somali mother. In 1989, she moved to Torino, Italy with her family and started playing volleyball. She soon thereafter discovered her specialty: javelin. Bani's personal best throw is 62.75 metres, achieved at the 2005 World Championships in Helsinki. However, since 2005, she has been suffering from health problems, which have significantly hampered her athletic performances. Bani ranks second on the all-time Italian list behind Claudia Coslovich.